Caffeine- The bitter, white crystalline xanthine alkaloid caffeine is found in tea, coffee, soft drinks, chocolates, pain relievers, and a variety of over the counter medications. It is a psychoactive stimulant drug that causes increased alertness by stimulating the central nervous system. For the same reason, many people feel more energetic after consuming it. It even elevates the mood but these effects do not last for long. The effects of caffeine usually last for about five to six hours, though caffeine sensitivity varies from person to person. It has been found that people who consume lot of caffeine on a daily basis soon develop less sensitivity and may need to increase their intake to enjoy the same effect. Being a diuretic, a person consuming caffeine may have to urinate more often.

Ginger Root has been used as herbal medicine in India, Asia, and Arab countries for a long time. People in China have been using this knotted, thick, underground stem or rhizome of the plant Zingiber officinale to improve digestion for over two thousand years. Ginger was also found effective in the treatment of health conditions such as heart problems, arthritis, colic, and diarrhea. Ginger is also a popular cooking spice in different cuisines. The magic herb can also help a great deal in pregnancy, motion sickness, and cancer chemotherapy since it aids in preventing or treating nausea and vomiting associated with it. Many women consume ginger to reduce the pain during menstrual periods. Ginger is also used to reduce inflammation and combat inflammation-related problems such as arthritis and ulcerative colitis. You may buy fresh ginger root or go for other variations like ginger extracts, capsules, and oils.

Green Tea Extract is utilized to increase fat metabolism as well as aide in weight loss and weight loss management.

Guarana has in recent times received widespread popularity because of an energy drink. It is actually a climbing plant in the family related to maple and is native to the Amazon region, predominantly in Brazil. It is a flowering plant with big leaves, but the fruit is the most prominent component, not bigger than a coffee bean. Guarana fruit has about the double content of caffeine when compared to the coffee bean. Besides the cognitive and fatigue reducing effects of caffeine, guarana displays also other interesting properties, such as the assistance in a weight loss program; namely, guarana affects the perception of the satiation, making the person feel full sooner. Further antioxidant and antibacterial effects have been noted as well. In combination with linoleic acid, guarana has shown fat cell reduction effects in mice.

Kola Nut is native to Africa, mainly found in the tropical rain forests. There are about hundred and twenty tree species which belong to this family, their fruit, the kola nut, being the interesting feature. It has been traditionally used for chewing, with an effect where hunger cravings subsided. The popularity of the kola nut was established by The Coca-Cola Company, which used the kola nut as an ingredient in this popular drink. Many other similar drinks and also energy drinks feature this ingredient. The kola nut, although featuring caffeine, provides a xanthine mixture with catechins which not only stimulate the central nervous system but also has analeptic and lipolytic properties, as well as chronotropic effects. Further effects include enhanced alertness, physical energy, mood and tactile sensitivity, as well as appetite suppression.

Some Unknown Ingredients, which is a common practice for many supplement manufacturers. They use ineffective common ingredients and trademark their name for them to disguse the actual low quality ingredient contained.

Yerba Matte Pronounced, YARE-ba MAH-tay, yerba mate is a shrub that belongs to the holly family. A Key Element in Estrin-D Yerba mate contains the following vitamins, minerals and additional compounds: Vitamin A to Vitamin C Vitamin E Vitamin B1 Vitamin B2 Vitamin Niacin Vitamin B5 Vitamin B complex Minerals: Calcium Iron Manganese Magnesium Potassium Phosphorus Selenium Additional Compunds: Flavonols Polyphenols Antioxidants Pantothenic Acid and more The leaves of yerba mate have been found to offer strength while the stems inspire energy.